CN1454735A - Method of manufacturing crystallizer of square or rectangular billet copper tube - Google Patents
Method of manufacturing crystallizer of square or rectangular billet copper tube Download PDFInfo
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- CN1454735A CN1454735A CN 03113361 CN03113361A CN1454735A CN 1454735 A CN1454735 A CN 1454735A CN 03113361 CN03113361 CN 03113361 CN 03113361 A CN03113361 A CN 03113361A CN 1454735 A CN1454735 A CN 1454735A
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- copper pipe
- square billet
- crystallizer
- rectangular bloom
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Abstract
The invention refers to a manufacturing process and method for square flan, rectangular flan copper pipe crystallizer. Plating an even abrasive resistant metal coated steel on the inner surface of circular copper pipe which is made with impact molding or extruding method; carries on square on rectangular flan shaping process to the copper pipe. The invention guarantees the uniformity of the coated steel in the copper. At the same time, it also solves the problem of variety of copper pipe's taper and internal diameter size in method which shapes at first and plates later.
Description
Technical field
The present invention relates to be used to cool off the method for manufacturing technology of the crystallizer copper pipe of molten steel.
Background technology
Copper and alloy thereof are used as the base material of crystallizer copper pipe because of having good heat-conducting, and molten steel is passed through from the copper pipe inner surface, and the copper pipe outer surface is taken away heat by the cooling water that flows, and molten steel is frozen into steel billet gradually.
Initial crystallizer copper pipe is directly used in continuous casting and contacts with molten steel, and in this process, except the abrasion that contact produces, sulfur-bearing, zinc etc. produce corrosion to crystallizer in the invar water in addition, thereby the life-span is very short.In order further to improve the service life of crystallizer copper pipe, people begin at its coating surface one abrasion coating such as hard chrome, and it is with the hardness height, and wearability is good and the most general.But coating uniformity is poor, easily crack, thereby the life-span is also very limited.
Because the chromium plating dispersibility is low, the uniformity of coating is also very poor, the thickness of coating at square billet or place, rectangular bloom copper pipe R angle can be quite thin, the utmost point is not wear-resisting, as want to allow place, R angle obtain certain thickness coating, has only the average thickness that thickens coating greatly, but and can change like this tapering, the inner cavity size of crystallizer, causing can't continuous casting, simultaneously again because the fragility of chromium coating, thickness surpasses under 150 microns hot conditions and easily comes off, thereby the average thickness of chromium coating is controlled between the 60-120 micron always, and place, R angle thickness has only the 5-10 micron.
In sum, obtain the square billet or the rectangular bloom crystallizer of homogeneous coating, it is very difficult adopting the conventional method of electroplating after the first moulding.
Summary of the invention
Can not guarantee the copper pipe crystallizer inner surface homogeneity question of coating everywhere in order to solve existing technology, the invention provides and a kind ofly can effectively guarantee the copper pipe crystallizer inner surface uniform coming of new process of coating everywhere.
The object of the present invention is achieved like this:
1, the method for manufacturing technology of a kind of square billet, rectangular bloom copper pipe crystallizer comprises moulding technique and surface treatment process method, and the first step of moulding process is with the copper ingot punching press or is squeezed into circular copper pipe, it is characterized in that:
A, in described punching press or push the conglobate copper pipe inner surface plating layer of even wearability coat of metal;
B, will carry out square billet or rectangular bloom processing and forming through above-mentioned surface-treated copper pipe.
2, the above-mentioned copper pipe base of handling through plating is heat-treated at 300-980 ℃, and then carry out processing and forming.Described heat treatment is temper.
3, the described coat of metal or be nickel alloy coating, or be chrome plating, or add chrome plating for nickel alloy coating.Nickel alloy coating can be Ni-Fe, nickel-cobalt, Ni-Fe-cobalt, nickel-manganese, nickel-tungsten, nickel-cobalt-tungsten, iron-nickel-tungsten, nickel-molybdenum bisuphide, nickel-phosphorus, nickel-boron, nickel-boron-phosphorus etc.
4, described square billet or rectangular bloom moulding technique or be core bar and external mold extrusion process, or be explosion formation method.
5, described nickel alloy coating thickness is 100 microns-6 millimeters.
6, the thickness of described chrome plating is the 60-1000 micron.
We find that this composite bed copper pipe (also being the coated copper pipe circle of plating base) is when processing and forming, coating layer is unaffected, its processing and forming is the same with the common copper pipe of processing, and the coating layer in the copper pipe after the processing and forming is still very even, and also there is quite thick coating at knuckle R place.This composite bed copper pipe if can be heat-treated at 300-980 ℃ before the processing and forming, between copper pipe matrix and coating layer, to form diffusion layer, like that will be better.
Method according to this patent: coating layer is a nickel alloy coating, and the thickness of coating is minimum to be 100 microns.The higher chrome plating of nickel alloy coating and hardness is compared, easier cold working, and the thickness of chrome plating is more than 60 microns below 500 microns.Nickel and hardness of alloy thereof strengthen its hardness and wearabilities not as the chrome plating height but can pass through to add hard particles or powder such as carborundum etc. in coating.The thickness of coating is directly related with the wearability of coating, can select suitable thickness in 100 microns to 6 millimeters scopes according to the abrasion resistance properties of needs.
Circular composite bed copper pipe is processed into the method for square or rectangle preferably by annular square opening of external application or rectangular opening mould, interiorly carries out punching press or is squeezed into square or rectangle with core bar.The copper pipe of the method processing, its wall thickness, thickness of coating be evenly attenuation in proportion throughout.And then with the core bar and the external mold of accurate radian, tapering, appearance and size push again, drawing to be to adjust size.
Before molding process, this composite deposite copper pipe is heat-treated, between coating and copper pipe matrix, to form diffusion layer.This heat treatment process is carried out before can or becoming rectangle in circular copper pipe one-tenth side, also can carry out before precise forming thereafter, also can all carry out this kind processing in two processes.Square billet of the present invention, rectangular billet caster crystallizer manufacturing process have solved the problem of coating uniformity difference.The crystallizer copper pipe internal surface that adopts this process to produce can obtain 60 microns to 1000 microns chrome platings or 6 millimeters following wearability nickel alloy coatings more than 100 microns, or the combined plating between them, i.e. nickel alloy coating+chrome plating.The present invention can effectively guarantee the copper pipe inner surface uniformity of coating everywhere.Electroplate problems such as tapering, internal diameter size that copper pipe easily takes place change after also having solved simultaneously first moulding.
The specific embodiment
Below by infinite embodiment the present invention is further described.
Embodiment 1:
Get a conglobate copper pipe of extruding, pipe range 850mm, wall thickness 11mm, external diameter 190mm, the thick 0.9mm of inner surface plating one deck Ni-Fe (90/10) alloy, chromium plating is 100 microns again.Anode must be positioned at the shaft core position of copper pipe during plating, to guarantee the copper pipe inwall uniformity of coating everywhere.Can electroplate with the formula groove that soaks of routine, also the mode of available stream plating is electroplated.With 400 ℃ of heat treatments 2 hours, be of a size of 133.9 * 131.9 after the processing, wall thickness 7.8mm, length overall 812mm, radian are 52500mm.Thickness of coating is 0.79mm.
To carry out temper at 500 ℃ through above-mentioned surface-treated copper pipe base.
To adopt core bar and external mold extrusion process to carry out the square billet processing and forming through above-mentioned surface-treated copper pipe base.
Embodiment 2:
Also can plated nickel-cobalt coating or nickel-cobalt-tungsten coating etc. at last routine copper pipe inwall.Other method of operating is the same.
Claims (7)
1, the method for manufacturing technology of a kind of square billet, rectangular bloom copper pipe crystallizer comprises moulding technique and surface treatment process method, and the first step of moulding process is with the copper ingot punching press or is squeezed into circular copper pipe, it is characterized in that:
A, in described punching press or push the conglobate copper pipe inner surface plating layer of even wearability coat of metal;
B, will carry out square billet or rectangular bloom processing and forming through above-mentioned surface-treated copper pipe.
2, the method for manufacturing technology of a kind of square billet according to claim 1, rectangular bloom copper pipe crystallizer is characterized in that: the above-mentioned copper pipe base of handling through plating is heat-treated at 300-980 ℃, and then carry out processing and forming.
3, the method for manufacturing technology of a kind of square billet according to claim 1, rectangular bloom copper pipe crystallizer is characterized in that: the described coat of metal or for nickel alloy coating, or be chrome plating, or add chrome plating for nickel alloy coating.
4, the method for manufacturing technology of a kind of square billet according to claim 1, rectangular bloom copper pipe crystallizer is characterized in that: described square billet or rectangular bloom moulding technique or for core bar and external mold extrusion process, or be explosion formation method.
5, the method for manufacturing technology of a kind of square billet according to claim 1, rectangular bloom copper pipe crystallizer is characterized in that: described nickel alloy coating thickness is 100 microns-6 millimeters.
6, the method for manufacturing technology of a kind of square billet according to claim 1, rectangular bloom copper pipe crystallizer is characterized in that: the thickness of described chrome plating is the 60-1000 micron.
7, the method for manufacturing technology of a kind of square billet according to claim 2, rectangular bloom copper pipe crystallizer is characterized in that: described heat treatment is temper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113361 CN1454735A (en) | 2003-04-30 | 2003-04-30 | Method of manufacturing crystallizer of square or rectangular billet copper tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113361 CN1454735A (en) | 2003-04-30 | 2003-04-30 | Method of manufacturing crystallizer of square or rectangular billet copper tube |
Publications (1)
| Publication Number | Publication Date |
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| CN1454735A true CN1454735A (en) | 2003-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 03113361 Pending CN1454735A (en) | 2003-04-30 | 2003-04-30 | Method of manufacturing crystallizer of square or rectangular billet copper tube |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614750A (en) * | 2013-11-22 | 2014-03-05 | 西峡龙成特种材料有限公司 | Preparation process for copper-plate electroplated nickel tungsten electroplated layer of continuous-casting crystallizer |
| CN103614751A (en) * | 2013-11-22 | 2014-03-05 | 西峡龙成特种材料有限公司 | Copper-plate nickel-manganese-alloy electroplated layer of continuous-casting crystallizer and preparation process thereof |
| CN103820828A (en) * | 2014-01-28 | 2014-05-28 | 秦皇岛首钢长白结晶器有限责任公司 | Nanometer Ni-Co-B coating technology for copper plate/copper tube of continuous casting crystallizer |
| CN105170922A (en) * | 2015-10-19 | 2015-12-23 | 姜少群 | Crystallizer copper tube with elemental nickel transition layer |
| CN105200462A (en) * | 2015-10-19 | 2015-12-30 | 姜少群 | Electroplating method for elemental nickel transition layer of mould copper tube |
| CN107309603A (en) * | 2016-04-27 | 2017-11-03 | 常州市武进长虹结晶器有限公司 | A kind of manufacturing process of big cross section rectangular integral crystallizer copper pipe |
| CN114289540A (en) * | 2021-12-24 | 2022-04-08 | 济南伟浩冶金机械有限公司 | Crystallizer copper pipe machining die and machining method |
-
2003
- 2003-04-30 CN CN 03113361 patent/CN1454735A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614750A (en) * | 2013-11-22 | 2014-03-05 | 西峡龙成特种材料有限公司 | Preparation process for copper-plate electroplated nickel tungsten electroplated layer of continuous-casting crystallizer |
| CN103614751A (en) * | 2013-11-22 | 2014-03-05 | 西峡龙成特种材料有限公司 | Copper-plate nickel-manganese-alloy electroplated layer of continuous-casting crystallizer and preparation process thereof |
| CN103614750B (en) * | 2013-11-22 | 2016-03-16 | 西峡龙成特种材料有限公司 | A kind of preparation technology of continuous casting crystallizer copper plate nickel tungsten electroplating coating |
| CN103820828A (en) * | 2014-01-28 | 2014-05-28 | 秦皇岛首钢长白结晶器有限责任公司 | Nanometer Ni-Co-B coating technology for copper plate/copper tube of continuous casting crystallizer |
| CN105170922A (en) * | 2015-10-19 | 2015-12-23 | 姜少群 | Crystallizer copper tube with elemental nickel transition layer |
| CN105200462A (en) * | 2015-10-19 | 2015-12-30 | 姜少群 | Electroplating method for elemental nickel transition layer of mould copper tube |
| CN105170922B (en) * | 2015-10-19 | 2017-12-01 | 重庆天春科技有限公司 | A kind of crystallizer copper pipe with elemental nickel transition zone |
| CN107309603A (en) * | 2016-04-27 | 2017-11-03 | 常州市武进长虹结晶器有限公司 | A kind of manufacturing process of big cross section rectangular integral crystallizer copper pipe |
| CN107309603B (en) * | 2016-04-27 | 2020-04-21 | 常州市武进长虹结晶器有限公司 | Manufacturing process of large-section rectangular integral crystallizer copper pipe |
| CN114289540A (en) * | 2021-12-24 | 2022-04-08 | 济南伟浩冶金机械有限公司 | Crystallizer copper pipe machining die and machining method |
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